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    Communication device and method for packet-based OFDM communications with differing length cyclic prefixes
    1.
    发明授权
    Communication device and method for packet-based OFDM communications with differing length cyclic prefixes 有权
    具有不同长度的循环前缀的基于分组的OFDM通信的通信设备和方法

    公开(公告)号：US08593934B2

    公开(公告)日：2013-11-26

    申请号：US13357747

    申请日：2012-01-25

    申请人： Kennan Laudel ,  Yongfang Guo

    发明人： Kennan Laudel ,  Yongfang Guo

    IPC分类号： H04L5/04 ,  H04B1/66

    CPC分类号： H04L5/0048 ,  H04L25/03019 ,  H04L27/2607 ,  H04L2025/03414 ,  H04L2025/03681 ,  H04L2025/03777 ,  H04W72/0406

    摘要： A network communication device is receive packet-based orthogonal frequency division multiplexed (OFDM) transmissions from one or more other devices in a network over a communication channel. The network communication device may determine a delay spread of the communication channel based on receipt of a probe signal from a transmitting device, configure a channel filter to effectively shorten the channel based on the delay spread, and instruct the transmitting device to shorten a length of a cyclic prefix for subsequent packet-based OFDM transmissions to be received from the transmitting device over the channel.

    摘要翻译： 网络通信设备将通过通信信道从网络中的一个或多个其他设备接收基于分组的正交频分复用（OFDM）传输。 网络通信设备可以基于从发送设备接收到探测信号来确定通信信道的延迟扩展，配置信道滤波器以根据延迟扩展来有效地缩短信道，并指示发送设备缩短 用于通过信道从发射设备接收的用于后续基于分组的OFDM传输的循环前缀。

    Coaxial network communication node and methods for communicating multimedia over a coaxial network with reduced-length cyclic prefixes
    2.
    发明授权
    Coaxial network communication node and methods for communicating multimedia over a coaxial network with reduced-length cyclic prefixes 失效
    同轴网络通信节点和用于在具有缩短长度的循环前缀的同轴网络上通信多媒体的方法

    公开(公告)号：US08121023B2

    公开(公告)日：2012-02-21

    申请号：US12563280

    申请日：2009-09-21

    申请人： Kennan Laudel ,  Yongfang Guo

    发明人： Kennan Laudel ,  Yongfang Guo

    IPC分类号： H04J11/00 ,  H03H7/30

    CPC分类号： H04L5/0048 ,  H04L25/03019 ,  H04L27/2607 ,  H04L2025/03414 ,  H04L2025/03681 ,  H04L2025/03777 ,  H04W72/0406

    摘要： A coaxial network communication node receives multimedia content with one or more other nodes in a coaxial network. The node determines a delay-spread of a coaxial channel based on receipt of a probe from a transmitting node and configures a channel-shortening time-domain equalizer (TEQ) filter to effectively shorten the channel based on the delay spread. The node instructs the transmitting node to shorten a length of a cyclic prefix for subsequent packet-based transmissions to be received from the transmitting node. The probe is stored and reused until the channel-shortening TEQ filter converges. The nodes may be configured to communicate in accordance with the Multimedia over Coax Alliance (MoCA®) specifications.

    摘要翻译： 同轴网络通信节点在同轴网络中与一个或多个其他节点接收多媒体内容。 该节点基于从发送节点接收探测器来确定同轴信道的延迟扩展，并且配置信道缩短时域均衡器（TEQ）滤波器，以基于延迟扩展来有效地缩短信道。 节点指示发送节点缩短用于从发送节点接收的后续基于分组的传输的循环前缀的长度。 探头被存储并重复使用，直到通道缩短TEQ滤波器收敛。 节点可以被配置为根据多媒体同轴联盟（MoCA）规范进行通信。

    Methods and systems to synchronize network nodes
    3.
    发明授权
    Methods and systems to synchronize network nodes 有权
    同步网络节点的方法和系统

    公开(公告)号：US08842790B2

    公开(公告)日：2014-09-23

    申请号：US12645250

    申请日：2009-12-22

    申请人： Kennan Laudel ,  Baohong Liu ,  Sowmiya Narasimhan ,  Sigang Qiu ,  Yongfang Guo

    发明人： Kennan Laudel ,  Baohong Liu ,  Sowmiya Narasimhan ,  Sigang Qiu ,  Yongfang Guo

    IPC分类号： H03K9/02 ,  H04L7/04 ,  H04L27/26

    CPC分类号： H04L7/041 ,  H04L27/2657

    摘要： Methods and systems to synchronize to a remote node counting rate, symbol rate, and carrier frequency as functions of an estimated frequency offset and relationships between the remote node carrier frequency and counting rate, and between the remote node carrier frequency and symbol rate. The carrier frequency offset may be scaled in accordance with a ratio between the carrier frequency and the remote counting rate to synchronize the local counting rate with the remote counting rate, and/or scaled in accordance with a relationship between the carrier frequency and the remote symbol rate to synchronize the local receive path and/or transmit path sample rate with the remote symbol rate. The carrier frequency offset may be applied as compensation in the receive path and/or the transmit path. The remote and local nodes may correspond to a network coordinator and an existing node, respectively, in a Multimedia Over Coax (MoCA) environment.

    摘要翻译： 与远程节点计数速率，符号速率和载波频率同步的方法和系统，作为估计频率偏移的函数和远程节点载波频率与计数速率之间以及远程节点载波频率与符号速率之间的关系。 可以根据载波频率和远程计数速率之间的比率来缩放载波频率偏移量，以使局部计数速率与远程计数速率同步和/或根据载波频率和远程符号之间的关系来缩放 速率以使本地接收路径和/或将路径采样率与远程符号速率同步。 载波频率偏移可以作为补偿应用于接收路径和/或发送路径。 远程和本地节点可以分别对应于多媒体同轴（MoCA）环境中的网络协调器和现有节点。

    COMMUNICATION DEVICE AND METHOD FOR PACKET-BASED OFDM COMMUNICATIONS WITH DIFFERING LENGTH CYCLIC PREFIXES
    4.
    发明申请
    COMMUNICATION DEVICE AND METHOD FOR PACKET-BASED OFDM COMMUNICATIONS WITH DIFFERING LENGTH CYCLIC PREFIXES 有权
    具有不同长度循环前缀的基于分组的OFDM通信的通信设备和方法

    公开(公告)号：US20140140285A1

    公开(公告)日：2014-05-22

    申请号：US14045025

    申请日：2013-10-03

    申请人： Kennan Laudel ,  Yongfang Guo

    发明人： Kennan Laudel ,  Yongfang Guo

    IPC分类号： H04L5/00 ,  H04L27/26 ,  H04W72/04

    CPC分类号： H04L5/0048 ,  H04L25/03019 ,  H04L27/2607 ,  H04L2025/03414 ,  H04L2025/03681 ,  H04L2025/03777 ,  H04W72/0406

    摘要： A network communication device is receive packet-based orthogonal frequency division multiplexed (OFDM) transmissions from one or more other devices in a network over a communication channel. The network communication device may determine a delay spread of the communication channel based on receipt of a probe signal from a transmitting device, configure a channel filter to effectively shorten the channel based on the delay spread, and instruct the transmitting device to shorten a length of a cyclic prefix for subsequent packet-based OFDM transmissions to be received from the transmitting device over the channel.

    摘要翻译： 网络通信设备通过通信信道从网络中的一个或多个其他设备接收基于分组的正交频分复用（OFDM）传输。 网络通信设备可以基于从发送设备接收到探测信号来确定通信信道的延迟扩展，配置信道滤波器以根据延迟扩展来有效地缩短信道，并指示发送设备缩短 用于通过信道从发射设备接收的用于后续基于分组的OFDM传输的循环前缀。

    Coaxial network communication node and methods for communicating within a MoCA network with reduced-length cyclic prefixes
    5.
    发明授权
    Coaxial network communication node and methods for communicating within a MoCA network with reduced-length cyclic prefixes 有权
    同轴网络通信节点和用于在具有缩短长度的循环前缀的MoCA网络内通信的方法

    公开(公告)号：US08345550B2

    公开(公告)日：2013-01-01

    申请号：US13218122

    申请日：2011-08-25

    申请人： Kennan Laudel ,  Yongfang Guo

    发明人： Kennan Laudel ,  Yongfang Guo

    IPC分类号： G08C15/00 ,  H04L12/26 ,  H04J3/16

    CPC分类号： H04L5/0048 ,  H04L25/03019 ,  H04L27/2607 ,  H04L2025/03414 ,  H04L2025/03681 ,  H04L2025/03777 ,  H04W72/0406

    摘要： A coaxial network communication node receives multimedia content with one or more other nodes in a Multimedia over Coax Alliance (MoCA®) coaxial network. The node determines a delay-spread of a coaxial channel based on a probe received from a transmitting node during a link-maintenance operation (LMO) cycle. The probe is stored and reused during the LMO until the channel-shortening TEQ filter converges. The node configures a channel-shortening time-domain equalizer (TEQ) filter to effectively shorten the channel and instructs the transmitting node to shorten a length of a cyclic prefix for subsequent packet-based transmissions.

    摘要翻译： 同轴网络通信节点在多媒体同轴电缆（MoCA））同轴网络中接收具有一个或多个其他节点的多媒体内容。 在链路维护操作（LMO）周期期间，节点基于从发送节点接收的探测来确定同轴信道的延迟扩展。 在LMO期间存储和重复使用探头，直到通道缩短TEQ滤波器收敛。 节点配置信道缩短时域均衡器（TEQ）滤波器以有效地缩短信道，并指示发送节点缩短用于后续基于分组的传输的循环前缀的长度。

    COAXIAL NETWORK COMMUNICATION NODE AND METHODS FOR COMMUNICATING WITHIN A MoCA NETWORK WITH REDUCED-LENGTH CYCLIC PREFIXES
    6.
    发明申请
    COAXIAL NETWORK COMMUNICATION NODE AND METHODS FOR COMMUNICATING WITHIN A MoCA NETWORK WITH REDUCED-LENGTH CYCLIC PREFIXES 有权
    同轴网络通信节点与在具有减少长度循环前缀的MoCA网络中通信的方法

    公开(公告)号：US20110310950A1

    公开(公告)日：2011-12-22

    申请号：US13218122

    申请日：2011-08-25

    申请人： Kennan Laudel ,  Yongfang Guo

    发明人： Kennan Laudel ,  Yongfang Guo

    IPC分类号： H03K5/159

    CPC分类号： H04L5/0048 ,  H04L25/03019 ,  H04L27/2607 ,  H04L2025/03414 ,  H04L2025/03681 ,  H04L2025/03777 ,  H04W72/0406

    摘要： A coaxial network communication node receives multimedia content with one or more other nodes in a Multimedia over Coax Alliance (MoCA®) coaxial network. The node determines a delay-spread of a coaxial channel based on a probe received from a transmitting node during a link-maintenance operation (LMO) cycle. The probe is stored and reused during the LMO until the channel-shortening TEQ filter converges. The node configures a channel-shortening time-domain equalizer (TEQ) filter to effectively shorten the channel and instructs the transmitting node to shorten a length of a cyclic prefix for subsequent packet-based transmissions.

    摘要翻译： 同轴网络通信节点在多媒体同轴电缆（MoCA））同轴网络中接收具有一个或多个其他节点的多媒体内容。 在链路维护操作（LMO）周期期间，节点基于从发送节点接收的探测来确定同轴信道的延迟扩展。 在LMO期间存储和重复使用探头，直到通道缩短TEQ滤波器收敛。 节点配置信道缩短时域均衡器（TEQ）滤波器以有效地缩短信道，并指示发送节点缩短用于后续基于分组的传输的循环前缀的长度。

    COMMUNICATION DEVICE AND METHOD FOR PACKET-BASED OFDM COMMUNICATIONS WITH DIFFERING LENGTH CYCLIC PREFIXES
    7.
    发明申请
    COMMUNICATION DEVICE AND METHOD FOR PACKET-BASED OFDM COMMUNICATIONS WITH DIFFERING LENGTH CYCLIC PREFIXES 有权
    具有不同长度循环前缀的基于分组的OFDM通信的通信设备和方法

    公开(公告)号：US20120195346A1

    公开(公告)日：2012-08-02

    申请号：US13357747

    申请日：2012-01-25

    申请人： Kennan Laudel ,  Yongfang Guo

    发明人： Kennan Laudel ,  Yongfang Guo

    IPC分类号： H04B1/69 ,  H04B1/692

    CPC分类号： H04L5/0048 ,  H04L25/03019 ,  H04L27/2607 ,  H04L2025/03414 ,  H04L2025/03681 ,  H04L2025/03777 ,  H04W72/0406

    摘要： A network communication device is receive packet-based orthogonal frequency division multiplexed (OFDM) transmissions from one or more other devices in a network over a communication channel. The network communication device may determine a delay spread of the communication channel based on receipt of a probe signal from a transmitting device, configure a channel filter to effectively shorten the channel based on the delay spread, and instruct the transmitting device to shorten a length of a cyclic prefix for subsequent packet-based OFDM transmissions to be received from the transmitting device over the channel.

    摘要翻译： 网络通信设备将通过通信信道从网络中的一个或多个其他设备接收基于分组的正交频分复用（OFDM）传输。 网络通信设备可以基于从发送设备接收到探测信号来确定通信信道的延迟扩展，配置信道滤波器以根据延迟扩展来有效地缩短信道，并指示发送设备缩短 用于通过信道从发射设备接收的用于后续基于分组的OFDM传输的循环前缀。

    COAXIAL NETWORK COMMUNICATION NODE AND METHODS FOR COMMUNICATING MULTIMEDIA OVER A COAXIAL NETWORK WITH REDUCED-LENGTH CYCLIC PREFIXES
    8.
    发明申请
    COAXIAL NETWORK COMMUNICATION NODE AND METHODS FOR COMMUNICATING MULTIMEDIA OVER A COAXIAL NETWORK WITH REDUCED-LENGTH CYCLIC PREFIXES 失效
    同轴网络通信节点和方法用于在具有减少长度循环前缀的同轴网络中通信多媒体

    公开(公告)号：US20110069605A1

    公开(公告)日：2011-03-24

    申请号：US12563280

    申请日：2009-09-21

    申请人： Kennan Laudel ,  Yongfang Guo

    发明人： Kennan Laudel ,  Yongfang Guo

    IPC分类号： H04J11/00 ,  H04L27/28 ,  H04J4/00

    CPC分类号： H04L5/0048 ,  H04L25/03019 ,  H04L27/2607 ,  H04L2025/03414 ,  H04L2025/03681 ,  H04L2025/03777 ,  H04W72/0406

    摘要： A coaxial network communication node receives multimedia content with one or more other nodes in a coaxial network. The node determines a delay-spread of a coaxial channel based on receipt of a probe from a transmitting node and configures a channel-shortening time-domain equalizer (TEQ) filter to effectively shorten the channel based on the delay spread. The node instructs the transmitting node to shorten a length of a cyclic prefix for subsequent packet-based transmissions to be received from the transmitting node. The probe is stored and reused until the channel-shortening TEQ filter converges. The nodes may be configured to communicate in accordance with the Multimedia over Coax Alliance (MoCA®) specifications.

    摘要翻译： 同轴网络通信节点在同轴网络中与一个或多个其他节点接收多媒体内容。 该节点基于从发送节点接收探测器来确定同轴信道的延迟扩展，并且配置信道缩短时域均衡器（TEQ）滤波器，以基于延迟扩展来有效地缩短信道。 节点指示发送节点缩短用于从发送节点接收的后续基于分组的传输的循环前缀的长度。 探头被存储并重复使用，直到通道缩短TEQ滤波器收敛。 节点可以被配置为根据多媒体同轴联盟（MoCA）规范进行通信。

    Packet detection in the presence of platform noise in a wireless network
    10.
    发明授权
    Packet detection in the presence of platform noise in a wireless network 失效
    在无线网络中存在平台噪声的数据包检测

    公开(公告)号：US07636404B2

    公开(公告)日：2009-12-22

    申请号：US11322829

    申请日：2005-12-30

    申请人： Yongfang Guo ,  Xintian E. Lin ,  Qinghua Li ,  Stanley K Ling ,  Jorge Myszne ,  David Carasso

    发明人： Yongfang Guo ,  Xintian E. Lin ,  Qinghua Li ,  Stanley K Ling ,  Jorge Myszne ,  David Carasso

    IPC分类号： H03D1/00

    CPC分类号： H04L27/0014 ,  H04L7/042 ,  H04L2027/003

    摘要： Techniques are presented for improving packet detection within a wireless device in the presence of platform noise. In some embodiments, packet detection is carried out by first performing a correlation operation using a signal at an input of a wireless receiver. The result of the correlation may then be compared to a threshold value in order to make a packet arrival decision. The threshold value may be varied during device operation in a manner that enhances packet detection performance.

    摘要翻译： 提出了在存在平台噪声的情况下改进无线设备内的分组检测的技术。 在一些实施例中，通过首先使用无线接收机的输入端的信号执行相关操作来执行分组检​​测。 然后可以将相关的结果与阈值进行比较，以便使分组到达确定。 阈值可以在设备操作期间以增强分组检测性能的方式改变。